Feeding effect of yeast and yeast alga mixture on Brachionus calyciflorus Feeding Effect of Different Sucrose Levels on Cochineal (Dactylopius coccus) The influence of four kinds of plant aqueous extracts on the feeding behaviors of Aphids gossypii Research Progress on Ensiling and Feeding Technology of Sorghum-sudangrass Hybirds Bioactivity of azadirachtin and its field efficiency against Spodoptera litura